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草业学报 ›› 2009, Vol. 18 ›› Issue (5): 46-51.

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外来物种小飞蓬的化感作用初步研究

高兴祥1,李美1,高宗军1,孙廷林1,孙作文2   

  1. 1.山东省农业科学院植物保护研究所,山东 济南 250100;
    2.山东省植物保护总站,山东 济南 250100
  • 收稿日期:2008-12-01 出版日期:2009-10-20 发布日期:2009-10-20
  • 作者简介:高兴祥(1977-),男,山东沂水人,助理研究员,硕士。E-mail:xingxiang02@163.com
  • 基金资助:
    国家863计划资助项目(2006AA10A214),国家“十一五”科技支持重大资助项目(2006BAD08A09),山东省农业科学院创新基金(2006YCX018)和山东省农业科学院青年科学基金(2005YQ025)资助。

Research on allelopathic effects of Conyza canadensis-an invasive species

GAO Xing-xiang1, LI Mei1, GAO Zong-jun1, SUN Ting-lin1, SUN Zuo-wen2   

  1. 1.Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Ji’nan 250100, China;

    2.General Station for Plant Protection of Shandong Province, Ji’nan 250100, China
  • Received:2008-12-01 Online:2009-10-20 Published:2009-10-20

摘要: 在室内用离体生测方法测定了小飞蓬水浸提液对马唐、稗草、反枝苋、黄瓜和油菜种子萌发和幼苗生长的影响。结果表明,小飞蓬水浸提液对5种植物种子的萌发和幼苗生长均有较强的抑制作用。5种受体植物中,以油菜最为敏感,最低浓度0.012 5 g/mL处理下,油菜种子完全受到抑制不能萌发,在0.025 0 g/mL处理下反枝苋、马唐、黄瓜和稗草种子的萌发率分别为6.67%,9.09%,40.00%和50.00%;各种受体植物种子的发芽速率与种子萌发率一致,但较种子萌发率敏感。相同浓度处理时,小飞蓬水提物对5种植物根长的生长抑制作用均明显高于对苗高的抑制作用。

Abstract: Allelopathic effects of aqueous extracts from C. canadensis were tested with apetri dish cultivation methods. They strongly inhibited the germination and seedling growth of Cucumis sativus, Brassica campestris, Digitaria sanguinalis, Echinochloa crusgalli and Amaranthus retroflexus. B. campestris was more sensitive than the other species. At 0.025 0 g/mL the germination of B. campestris, A. retroflexus, D. sanguinalis, C. sativus and E. crusgalli were 0, 6.67%, 9.09%, 40.00%, and 50.00%, respectively. The germination speed reflected the germination percentage, but was more sensitive. The roots were inhibited more strongly than seedling height at the same concentrations.

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